One day earlier, Dunham showed off her quirky airport style, which consisted of water shoes and bright blue-and-white leggings. She was apparently hanging out with Girls producer Jenni Konner, who she tagged in the caption.

"Sporting water shoes in the airport turns out to be my bottom," Dunham Instagrammed. "@jennikonner is v v worried & also concerned."

Meanwhile at the Democratic National Convention, Hillary Clinton, who Dunham has been a longtime supporter of, made history as the first woman to lead the presidential ticket of a major political party.

Dunham teamed up with America Ferrera during day two of the convention on Tuesday, where they made it very clear they are against Donald Trump. Hear why in the video below.